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std/streams/_common.ts

Deno standard library
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
export const DEFAULT_CHUNK_SIZE = 16_640;export const DEFAULT_BUFFER_SIZE = 32 * 1024;
/** Generate longest proper prefix which is also suffix array. */export function createLPS(pat: Uint8Array): Uint8Array { const lps = new Uint8Array(pat.length); lps[0] = 0; let prefixEnd = 0; let i = 1; while (i < lps.length) { if (pat[i] == pat[prefixEnd]) { prefixEnd++; lps[i] = prefixEnd; i++; } else if (prefixEnd === 0) { lps[i] = 0; i++; } else { prefixEnd = lps[prefixEnd - 1]; } } return lps;}